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A257578
Continued square root map applied to fourth powers: 1, 2^4, 3^4, 4^4, ...
4
2, 4, 6, 7, 4, 0, 4, 5, 3, 1, 7, 1, 7, 7, 9, 3, 1, 0, 6, 7, 4, 7, 9, 9, 0, 6, 4, 9, 5, 6, 3, 7, 7, 9, 9, 2, 9, 8, 5, 4, 7, 9, 6, 3, 9, 1, 7, 2, 2, 3, 8, 4, 1, 0, 1, 7, 8, 2, 2, 1, 0, 5, 8, 9, 8, 1, 2, 4, 6, 3, 9, 0, 9, 8, 1, 1, 9, 5, 5, 4, 4, 0, 3, 4, 3, 0, 6
OFFSET
1,1
COMMENTS
The continued square root map applied to a sequence b(1), b(2), b(3), ... produces the decimal number sqrt(b(1)+sqrt(b(2)+sqrt(b(3)+sqrt(b(4)+...)))).
LINKS
Herman P. Robinson, The CSR Function, Popular Computing (Calabasas, CA), Vol. 4 (No. 35, Feb 1976), pages PC35-3 to PC35-4. Annotated and scanned copy.
EXAMPLE
2.4674045317177931067479906...
CROSSREFS
Cf. A000583 (the fourth powers).
Sequence in context: A132426 A072646 A091476 * A272665 A114431 A167689
KEYWORD
nonn,cons
AUTHOR
N. J. A. Sloane, May 02 2015
EXTENSIONS
a(27)-a(87) from Hiroaki Yamanouchi, May 03 2015
STATUS
approved